Co-existence of glucagon- and substance P-like immunoreactivity in the chicken retina |
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Authors: | Y Katayama-Kumoi H Kiyama R Manabe Y Shiotani M Tohyama |
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Institution: | 1. Department of Neuroanatomy, Institute of Higher Nervous Activity, Osaka University Medical School, 4-3-57 Nakanoshima, Kitaku, Osaka 530, Japan |
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Abstract: | This immunohistochemical study of chicken retina using flat-mounts shows that pancreatic glucagon- and substance P-like immunoreactive amacrine cells have more heterogeneous subpopulations than was previously understood to be the case. Using double-staining immunohistochemical procedures we demonstrate that a substantial proportion of all subtypes of glucagon-like immunoreactive cells contain substance P-like immunoreactivity and that the ratio of the amacrine cells containing both peptides to total immunoreactive cells varies according to position in the retinal and cell type. These results suggest that retinal cells may have different functions according to position or cell type. |
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Keywords: | FITC fluorescein isothiocyanate GI glucagon-like immunoreactive or immunoreactivity Ig immunoglobulin SP substance P SPI substance P-like immunoreactive or immunoreactivity |
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